func processRequest(registry kit.Registry, request kit.Request, handler kit.RequestHandler) (kit.Response, bool) {
var response kit.Response
// Run before middlewares.
for _, middleware := range registry.HttpFrontend().BeforeMiddlewares() {
var skip bool
response, skip = middleware(registry, request)
if skip {
return nil, true
} else if response != nil {
break
}
}
// Only run the handler if no middleware provided a response.
if response == nil {
skip := false
response, skip = handler(registry, request)
if skip {
return nil, true
}
}
if response.GetHttpStatus() == 0 {
// Note: error handler middleware will set proper http status for error responses.
response.SetHttpStatus(200)
}
// Run after request middlewares.
// Note: error responses are converted with the serverErrrorMiddleware middleware.
// Note: serializing the response into the proper format is done with the SerializeResponseMiddleware.
for _, middleware := range registry.HttpFrontend().AfterMiddlewares() {
resp, skip := middleware(registry, request, response)
if skip {
return nil, true
} else if resp != nil {
response = resp
}
}
return response, false
}
func RequestLoggerMiddleware(registry kit.Registry, r kit.Request, response kit.Response) (kit.Response, bool) {
// Calculate time taken.
rawStarted, ok1 := r.GetContext().Get("startTime")
rawFinished, ok2 := r.GetContext().Get("endTime")
timeTaken := int64(-1)
if ok1 && ok2 {
started := rawStarted.(time.Time)
finished := rawFinished.(time.Time)
timeTaken = int64(finished.Sub(started) / time.Millisecond)
}
// Log the request.
method := r.GetHttpMethod()
path := r.GetPath()
if response.GetError() != nil {
registry.Logger().WithFields(logrus.Fields{
"frontend": r.GetFrontend(),
"action": "request",
"method": method,
"path": path,
"status": response.GetHttpStatus(),
"err": response.GetError(),
"milliseconds": timeTaken,
}).Errorf("%v: %v - %v - %v", response.GetHttpStatus(), method, path, response.GetError())
} else {
registry.Logger().WithFields(logrus.Fields{
"frontend": r.GetFrontend(),
"action": "request",
"method": method,
"path": path,
"status": response.GetHttpStatus(),
"milliseconds": timeTaken,
}).Debugf("%v: %v - %v", response.GetHttpStatus(), method, path)
}
return nil, false
}